Pet fountain



FIG. 1 is a front perspective view of a pet fountain in accordance with my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a cross-sectional view of a lower portion of the pet fountain.

The broken lines depict environmental subject matter, are for illustration only, and form no part of the claimed design. 

CLAIM The ornamental design for a pet fountain, as shown and described. 